Copyright

Any redistribution or reproduction of part or all of the contents in any form is prohibited other than the following:

you may print or download to a local hard disk extracts for your personal and non-commercial use only
you may copy the content to individual third parties for their personal use, but only if you acknowledge the website as the source of the material
You may not, except with our express written permission, distribute or commercially exploit the content. Nor may you transmit it or store it in any other website or other form of electronic retrieval system.

We would like to acknowledge the following authors whose pictures we have used in the website under the creative common license 0.0

We thank all the picture authors in sharing their efforts and pictures for the benefit of many.